Horowitz might not be able to recommend a prosecution if said individuals who committed crimes were given secret pardons or executive privilege by Obama. Food for thought.
And every conviction that occured by his FBI/DOJ could also be overturned. Major reason this is all a giant clusterfuck. Pretty sure every country we bombed could sue us as well if the man who directed it all was illegitimate every order he gave was as well. For better or for worse.
That was made public by a Dem Senator (iirc) early on in Trump's term. He said he would tell people about "secret pardons" if Trump tried interfering w/ Comey or Mueller (forget which one).